Atomera Inc (ATOM) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

30,456,716Shares Outstanding

153,270Shares held by institutions

$878,237Value of institutional holdings

33.55%Institutional ownership %

-1.04%Shares Changed QoQ

90No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Recent 13F filings as of December 2025 show that 90 institutional investors hold a position in Atomera Inc (NASDAQ:ATOM).

The percentage of Atomera owned by institutions changed from 34.8% in September 2025 to 33.6% in December 2025, marking a slight down trend.
On a quarter-over-quarter basis, institutional holdings shifted by -1.04%, with a year-over-year an increase of 21.62% in the count of filers.
During the quarter, 49 institutions bought more Atomera shares, 24 sold shares, and 17 of the 90 total investors held their position steady.
This class of investors decreased its holdings in Atomera to 10.22Mn shares for the 13F-cycle ending December 2025, down by 107.58K shares quarter on quarter, and up 1.64Mn shares year over year.
BlackRock, Inc.'s holding of 1.97Mn shares as of December 31, 2025 makes it the primary institutional investor in Atomera, owning 6.48% of the stock.
Among the most significant buyers of Atomera during December 2025 were MARSHALL WACE, LLP (179.28K), Pathstone Holdings, LLC (167.91K), JANE STREET GROUP, LLC (121.46K), XTX Topco Ltd (96.27K), GSA CAPITAL PARTNERS LLP (95.78K).
Leading sellers of Atomera stock in December 2025 included Baird Financial Group, Inc. (663.54K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (215.84K), BARD ASSOCIATES INC (143.88K), CITADEL ADVISORS LLC (104.31K), Hilltop Holdings Inc. (61.60K).
The top 10 institutional holders of Atomera for the quarter ending December 2025 included BlackRock, Inc. (1.97Mn), VANGUARD GROUP INC (1.65Mn), GEODE CAPITAL MANAGEMENT, LLC (740.99K), AVENIR CORP (614.38K), HOLLENCREST CAPITAL MANAGEMENT (606.55K), Quantum Private Wealth, LLC (598.85K), STATE STREET CORP (489.15K), Baird Financial Group, Inc. (312.12K), NORTHERN TRUST CORP (276.13K), TWO SIGMA INVESTMENTS, LP (181.33K).

90 Institutional Holders

153,270 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	1,973,176	76,330	4.02%	$4,360,720.00
VANGUARD GROUP INC	31 Dec, 2025	1,645,828	9,890	0.60%	$3,637,279.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	740,985	17,658	2.44%	$1,637,871.00
AVENIR CORP	31 Dec, 2025	614,385	10,000	1.65%	$1,357,791.00
HOLLENCREST CAPITAL MANAGEMENT	31 Dec, 2025	606,546	7,479	1.25%	$1,340,467.00
Quantum Private Wealth, LLC	31 Dec, 2025	598,847	71,739	13.61%	$1,323,453.00
STATE STREET CORP	31 Dec, 2025	489,147	42,569	9.53%	$1,081,015.00
Baird Financial Group, Inc.	31 Dec, 2025	312,120	-663,541	-68.01%	$689,785.00
NORTHERN TRUST CORP	31 Dec, 2025	276,128	-17,406	-5.93%	$610,243.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	181,328	90,386	99.39%	$400,735.00
MARSHALL WACE, LLP	31 Dec, 2025	179,276	179,276	0.00%	$396,199.00
JANE STREET GROUP, LLC	31 Dec, 2025	171,424	121,457	243.07%	$378,847.00
MORGAN STANLEY	31 Dec, 2025	171,001	89,429	109.63%	$377,913.00
Pathstone Holdings, LLC	31 Dec, 2025	167,905	167,905	0.00%	$371,071.00
Sargent Investment Group, LLC	31 Dec, 2025	166,050	2,500	1.53%	$366,971.00
UBS Group AG	31 Dec, 2025	152,915	-17,248	-10.14%	$337,942.00
Westside Investment Management, Inc.	31 Dec, 2025	149,447	-38,505	-20.49%	$330,285.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	138,761	34,132	32.62%	$306,662.00
BROWN ADVISORY INC	31 Dec, 2025	100,243	-52,200	-34.24%	$221,537.00
XTX Topco Ltd	31 Dec, 2025	96,270	96,270	0.00%	$212,757.00

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